Filtering apparatus.



C. 8. SMITH.

FILTERING APPARATUS. APPLICATION FILED MAY [0, I913. RENEWED JUNE 6,1918.

1,293,649, Patented Feb. 4, 1919 MO 4M 4&4. @51 11% m a rare.

CAROLYN S. SMITH, OF BROOKLYN, NEW YORK.

FILTERING APPARATUS.

Application filed May 10, 1913, Serial No. 766,828. Renewed June 6, 1918.

To all whom it may concern:

Be it known that I, CAROLYN S. SMITH, a citizen of the United States of America, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Filtering Apparatus, of which the following is a specification accompanied by drawings.

This invention relates to filtering apparatus, more particularly to portable filtering apparatus, although some of the features of the invention may be applied to various types of apparatus.

The objects of the invention are to increase the degree of purity of the water, provide means for setting up galvanic action to aid in purifying the water, and produce an apparatus which is simple and efficient, readily transported from place to place and suitable for office and home use and capable of being easily adjusted and cleaned.

The invention is illustrated in one of the best forms known to me in the accompanying drawing, which is an elevation partly in longitudinal section.

Referring to the drawings, A represents a suitable frame or stand, preferably of such character that the filtering apparatus is portable. The filtering tank B is preferably removably supported in the stand, so that it may be readily cleaned and to permit the filtering material to be renewed. One of the important features of the invention relates to the character of the filtering means in the tank by means of which sufficient galvanic action is set up in the water to aid in purifying the water. I have discovered that suitable and highly efiicient galvanic couples may be formed in the tank by means of wire mesh gauze or nettings of different metals, as for instance, brass and aluminum, having their edges in contact, the mesh to be substantially fine, as No. 60, although other degrees of fineness may be used. These galvanic couples are preferably inserted in the tank in the form of transverse partitions, and may be constructed by spreading the wire mesh C and D over a holding or clamping ring E, so that the ends of the portions of wire mesh are in contact. The ring and gauze carried thereby are placed in the tank and the rings E may be provided with the holes F to enable the partitions to be manipulated into position and withdrawn when desired by means of a suitable instrument.

Specification of Letters Patent.

Patented Feb. 4, 1919.

Serial No. 238,605.

As shown, the edges of the wire mesh portions may be clamped between the rings E and the sides of the tank or container, or otherwise maintained in contact with each other. A suitable arrangement of partitions is that shown in the drawing, in which three partitions are illustrated,

although there may be any desired number, and I have found that the galvanic action in the tank is more efiicient if the character of the metals forming the wire meshes is alternated throughout the series of partitions. In the illustration, the wire mesh portions C of one metal, as brass, alternate with the mesh portions D of aluminum. Any suitable combinations of metals or materials may be used capable of setting up galvanic action, which aids in purifying the water in accordance with the well-known principles. The galvanic action while slight as compared with heavy battery currents, is suificient to produce water much purer than with ordinary filters of the usual po rous material. To increase the purity, I prefer to use additional filtering material, as carbon G in one portion of the tank and flint H in another portion, and any suitable materials may be used.

I have found that the galvanic action seems to be increased if the water is forced into the tank under pressure and I prefer to force the water in at the bottom and withdraw it at the top. The temperature of the tank should also not be too low, preferably not below about 40 F. so that ice should not be packed around the tank, because a temperature below about 40 F. seems to lessen the galvanic action.

In the mechanical construction of the apparatus, heads or end portions J and K may be providedsuitably connected to the frame, and the tank proper B may be inserted between the heads and removably held in position by means of suitable clamps L. Rubber gaskets O are preferably inserted between the heads and the tank, and the bottom head K is preferably of magnet- .ized metal which is insulated from the tank B by the gasket 0. The magnetic attraction exerted by the head K tends to aid in drawing impurities to the bottom, as for instance, metallic particles. If desired, a partition P of fibrous material as asbestos may be inserted between the head K and the tank B or in the lower portion of the apparatus, which serves to catch the sedidraw-ofl or drain pipe S is preferably ar-' ranged at one side of the bottom as shown and the inlet Q at the other side, so that in cleaning the apparatus, the current of water is forced across the bottom.

The water reservoir T is preferably arranged at the top of the apparatus, and a cooling chamber U is arranged intermediate the reservoir T and the tank B, and preferably provided with a coil V which may be embedded in ice, and is connected to the outlet R. The draw-ofl cock W is at the side of the apparatus, and the drain X for the cooling chamber extends to the lower portion of the frame. A pump cylinder Y receives water from the reservoir T and its spring retracted plunger may be manipulated by the foot of the operator as by means of the treadle connected to the plunger. The arrangement is such that each time that the treadle Z is pressed downward, a measured quantity of water enters the cylinder Y and is forced under pressure through the pipe a connecting with the inlet Q, into the tank. The quantity of water so forced may be about one glassful or more,

and may be withdrawn from the cock W at once or the cock W may be opened before the pum plunger is operated, so that the water is forced directly into the glass. The tank may be pumped up under pressure by several strokes of the pump and thus maintained under pressure, if desired.

I claim and desire to obtain by Letters Patentthe following:

1. Filtering apparatus comprising a tank and a transverse partition in said tank, said partition consisting of a ring orsupport, and wire mesh screens of different metals spread over said ring, with the edges of the screens in contact with each other at the sides of the ring, forminga galvanic couple.

2. Filtering apparatuscomprising a tank, a series of transverse partitions in said tank, each partition consisting of a ring or support, and wire mesh screens of different metals spread over said rings, with the edges of each pair of screens in contact with each other, forming galvanic couples, the screens alternating in character of the metal throughout the series of partitions.

3. Filtering apparatus comprisinga' tank, a series of transverse partitions in said tank, each partition consisting of a ring or support, and wire mesh screens of different metals spread over said rings, with the edges of each pair of screens in contact with each other, forming galvanic couples, the screens alternating in character of the metal throughout the series of partitions, and means for forcing measured quantities of water into said tank under pressure.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CAROLYN S. SMITH. Witnesses:

ELsiE SPIJNKLER, M. M. NEUooMER.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

